Date: 05/08/2026

In late 2024, I decided to recreate the logic integrated circuit in the Apollo Guidence Computer. I used the scanned schematic from the Apollo era to create the dual 3 input Nor gate. The resistor value choice was from Fairchild uL9903 RTL gate and the transistor was picked for a modern replacement of the 2N207, the PBMT2369. I was able to fit the entire design into a DIP-10 pinout using smd components. I did solder the board by hand, it just took alot of patience. Board Files on Github

Pinout from The Virtual AGC Project

Here are some images of the board

Originital Schematic

Kicad Schematic

PCB Layout

Bill of Materials (BOM)

Component type	Reference	Description	Quantity	Sources	Footprint
PCB		Dual NOR PCB	1	Oshpark
Connector	J1	01x05 Pin Header	2	Digikey 2057-PH1-05-UA-ND	PinHeader 01x05 P2.54mm
NPN BJT Transistor	Q1-Q6	PBMT2369	6	Digikey 1727-PMBT2369,235CT-ND	SOT-23
Resistor	R1, R5	680 Ohm	2	Digikey 13-RC0603JR-13680RLCT-ND	0603
Resistor	R2, R3, R4, R6, R7, R8	470 Ohm	6	Digikey 13-RC0603FR-13470RLCT-ND	0603